Tuesday 14 August 2012

Burning Money - Learn Chemistry Magics

In the burning money demonstration, paper currency is on fire yet is not consumed by the flames.

It is nothing but only a simple chemistry magic trick which illustrates the process of combustion, the flammability of alcohol, and the special qualities of the material used to make currency.
Now learn how to do the magic, but before that we are going to highlight some concepts behind the magic trick.
Scientific Concept behind Burning Money Magic
A combustion reaction occurs between alcohol and oxygen, producing heat and light (energy) and carbon dioxide and water.
C2H5OH + 4 O2 -> 2 CO2 + 3 H2O + energy
When the bill is soaked an alcohol-water solution, the alcohol has a high vapor pressure and is mainly on the outside of the material (a bill is more like fabric than paper, which is nice, if you've ever accidentally washed one). When the bill is lit, the alcohol is what actually burns. The temperature at which the alcohol burns is not high enough to evaporate the water, which has a high specific heat, so the bill remains wet and isn't able to catch fire on its own. After the alcohol has burned, the flame goes out, leaving a slightly damp dollar bill.
Here is what you need to perform the burning money magic:
  • dollar bill (higher denomination if you're brave)
  • tongs
  • matches or a lighter
  • salt (or one of these chemicals if you want a colored flame)
  • solution of 50% alcohol and 50% water (you can mix 95% alcohol with water in a 1:1 ratio, if desired)
Now we are going to discuss about the procedure of performing this chemistry magic trick which is not a magic, but only a conceptual chemistry reaction.

This $20 is on fire, but it is not being consumed by the flames.

  1. Prepare the alcohol and water solution. You can mix 50 ml of water with 50 ml of 95-100% alcohol.
  2. Add a pinch salt or other colorant to the alcohol/water solution, to help produce a visible flame.
  3. Soak a dollar bill in the alcohol/water solution so that it is thoroughly wet.
  4. Use tongs to pick up the bill. Allow any excess liquid to drain. Move the damp bill away from the alcohol-water solution.
  5. Light the bill on fire and allow it to burn until the flame goes out.
It is an cool chemistry magic trick. In actual life magic is nothing it is only a combination of some tricks, reactions and concepts. We will discuss next science magic soon...




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